---
product_id: 8473068
title: "Sperry Instruments STK001 Non-Contact Voltage Tester (VD6504) & GFCI Outlet / Receptacle Tester (GFI6302) Kit, Electrical AC Voltage Detector, Yellow & Black"
brand: "sperry"
price: "R1233"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Sperry"
url: https://www.desertcart.co.za/products/8473068-sperry-instruments-stk001-non-contact-voltage-tester-vd6504-and-gfci
store_origin: ZA
region: South Africa
---

# Detects 50-1000V AC 360° audible & visual alerts Hi-impact ABS housing + rubber grips Sperry Instruments STK001 Non-Contact Voltage Tester (VD6504) & GFCI Outlet / Receptacle Tester (GFI6302) Kit, Electrical AC Voltage Detector, Yellow & Black

**Brand:** sperry
**Price:** R1233
**Availability:** ✅ In Stock

## Summary

> ⚡ Stay Shock-Safe & Ahead of the Curve with Sperry’s Ultimate Voltage Tester Kit!

## Quick Answers

- **What is this?** Sperry Instruments STK001 Non-Contact Voltage Tester (VD6504) & GFCI Outlet / Receptacle Tester (GFI6302) Kit, Electrical AC Voltage Detector, Yellow & Black by sperry
- **How much does it cost?** R1233 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/8473068-sperry-instruments-stk001-non-contact-voltage-tester-vd6504-and-gfci)

## Best For

- sperry enthusiasts

## Why This Product

- Trusted sperry brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual-Function Kit:** Includes both a voltage detector and GFCI outlet tester for comprehensive electrical safety checks.
- • **Rugged Durability:** Built with hi-impact resistant ABS and soft over-molded grips to withstand 10 ft drops and 250 lb crushes.
- • **Certified Safety Ratings:** CAT III 1000V and CAT III 300V ratings guarantee professional-grade reliability on any job site.
- • **Precision Voltage Detection:** Non-contact sensing for safe, accurate AC voltage verification from 50 to 1000 volts.
- • **Instant Visual & Audio Alerts:** Bright neon lights combined with 360° beeping indicators ensure you never miss a live circuit.

## Overview

The Sperry Instruments STK001 Kit combines a non-contact voltage detector and GFCI outlet tester in a compact, rugged design. It detects AC voltage from 50 to 1000 volts with bright visual neon indicators and 360° audible alerts, ensuring maximum safety before electrical work. Engineered with hi-impact ABS housing and rubber grips, it withstands tough job site conditions and meets CAT III safety standards. Ideal for professionals and savvy DIYers who demand precision, durability, and peace of mind.

## Description

Product Description Safety is the number one priority on any job site. Sperry Instrument's testing equipment can be put to good use ensuring that electrical equipment is properly installed and safe to operate. The condition of electrical installations can be established when contractors use test equipment. Any test unit that can be used to measure or review an application without coming in contact with a live conductor is a necessity. Testing equipment can be put to good use ensuring that electrical equipment is properly installed and safe to operate. Faulty installations can be lethal; the condition of electrical installations can be established when contractors use test equipment. Sperry Instrument is pleased to offer an innovative full feature line of test equipment designed to make electrical work faster and safer. The electrical testers below accurately identify and capture circuit continuity and voltage measurements. These testers are ideal for any electrical professional or to have at home. From the Manufacturer Non contact sensing circuit.

Review: The system works as advertised, and is simple for an amateur to use. - Works very well. Good price. Good value. It's what I need to replace existing light pole outside with which I need to insulate some existing wiring while I install solar-powered lighting. I want to make sure the old light is completely de-powered before messing with it.
Review: Very sensitive - UPDATE 12/21: I have used several non-contact voltage (NCV) testers since buying this one (which I also still use). I think it be fair, I am updating my review to say that this tester is NOT unreliable. The problem is that it’s VERY sensitive. I have another NCV tester that is meant for testing/repairing Christmas lights. That one is not nearly as sensitive as this one because the Xmas light wires are exposed. This Sperry tester is sensitive enough to detect magnetic fields inside of a wall. Initially, I thought this tester triggered on a wooden door. That door happened to be next to my garage door wall switch. While the 2 are several inches apart, the Sperry tester was able to detect the live AC wires in the wall. That’s actually a good thing, and it’s what this is supposed to do. ORIGINAL REVIEW: The NCV tester It triggered on a door handle installed on a wooden door. No electrical contacts or wiring in the wooden door. Needless to say, when I get this up to a wall or near a power outlet, I can’t trust it. I can’t trust that it actually found a powered wire inside the wall or that whatever outlet that I bring it near actually has voltage. Quite disappointing. I have safely used it to verify a de-energized state on devices before I work on them, but I can’t say it’s always reliable. A false positive is better than a false negative, though. Of course, if it indicates negative (de-energized), I always retest with my multimeter. After all, electricity is unforgiving and gives zero room for error.

## Features

- VERIFIES VOLTAGE PRESENSE: Verifies the presence of AC Voltage prior to working on electrical installation or troubleshooting (GFI6302 and VD6504)
- DURABLE: Hi-Impact Resistant ABS housing with soft over-molded rubber grips with a compact ergonomic design (GFI6302 and VD6504)
- QUICKLY READ: Bright color-coded neon lights for easy visual indication (GFI6302)
- CIRCUIT SENSING: Non-Contact sensitivity detects 50-1000V AC and patented battery self-test feature (VD6504)
- AUDIBLE AND VISIBLE INDICATOR: 360° visual and beeping audio Non-Contact Voltage Detection (VD6504)
- RATED: CAT Rating III 300V, C-UL US (GFI6302), CAT Rating III 1000V, IV 600V, (VD6504) 10 ft Drop and 250 lb Crush (GFI6302 and VD6504)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002JGQAQ6 |
| Best Sellers Rank | #47,235 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #76 in Multi Testers |
| Brand | SPERRY |
| Brand Name | SPERRY |
| Color | Yellow and Black |
| Compatible Devices | Electrical diagnostic tools, multimeters, circuit testers |
| Customer Reviews | 4.5 out of 5 stars 8,720 Reviews |
| Global Trade Identification Number | 00035632100255 |
| Included Components | Multi Testers, Scanners, Test & Measurement |
| Item Dimensions | 2 x 6 x 9 inches |
| Item Type Name | Non-Contact Voltage Tester |
| Item Weight | 4.54 g |
| Item dimensions L x W x H | 2 x 6 x 9 inches |
| Manufacturer | Gardner Bender |
| Maximum Operating Voltage | 1000 volts_of_alternating_current |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 50 |
| Model | STK001 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | STK001 |
| Power Source | Battery Powered |
| Style | NC Tester & GFCI Tester Kit |
| Style Name | NC Tester & GFCI Tester Kit |
| UPC | 656166737511 077344213168 035632100255 |
| Unit Count | 1 Count |
| Warranty Description | Limited Lifetime |

## Product Details

- **Brand:** SPERRY
- **Color:** Yellow and Black
- **Item Weight:** 4.54 g
- **Power Source:** Battery Powered
- **Style:** NC Tester & GFCI Tester Kit

## Images

![Sperry Instruments STK001 Non-Contact Voltage Tester (VD6504) & GFCI Outlet / Receptacle Tester (GFI6302) Kit, Electrical AC Voltage Detector, Yellow & Black - Image 1](https://m.media-amazon.com/images/I/713HKzenR+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ The system works as advertised, and is simple for an amateur to use.
*by R***T on July 20, 2026*

Works very well. Good price. Good value. It's what I need to replace existing light pole outside with which I need to insulate some existing wiring while I install solar-powered lighting. I want to make sure the old light is completely de-powered before messing with it.

### ⭐⭐⭐⭐⭐ Very sensitive
*by T***N on September 18, 2020*

UPDATE 12/21: I have used several non-contact voltage (NCV) testers since buying this one (which I also still use). I think it be fair, I am updating my review to say that this tester is NOT unreliable. The problem is that it’s VERY sensitive. I have another NCV tester that is meant for testing/repairing Christmas lights. That one is not nearly as sensitive as this one because the Xmas light wires are exposed. This Sperry tester is sensitive enough to detect magnetic fields inside of a wall. Initially, I thought this tester triggered on a wooden door. That door happened to be next to my garage door wall switch. While the 2 are several inches apart, the Sperry tester was able to detect the live AC wires in the wall. That’s actually a good thing, and it’s what this is supposed to do. ORIGINAL REVIEW: The NCV tester It triggered on a door handle installed on a wooden door. No electrical contacts or wiring in the wooden door. Needless to say, when I get this up to a wall or near a power outlet, I can’t trust it. I can’t trust that it actually found a powered wire inside the wall or that whatever outlet that I bring it near actually has voltage. Quite disappointing. I have safely used it to verify a de-energized state on devices before I work on them, but I can’t say it’s always reliable. A false positive is better than a false negative, though. Of course, if it indicates negative (de-energized), I always retest with my multimeter. After all, electricity is unforgiving and gives zero room for error.

### ⭐⭐⭐⭐⭐ Two great tools in one package!
*by O***E on May 10, 2020*

We are updating our home. If you are doing any DIY electrical work (we changed out our light switches to rockers and newer wall outlets/receptacles), these two items are necessities! A must have. Always turn off the power at the breaker box BEFORE doing any work with electrical wiring. The Sperry volt meter is accurate. Isn't over sensitive (some reviews mentioned) but can be a bit tricky to use around walls with multiple power connections. Otherwise, its worked great for me. Especially when I've had individual wires in a junction box to check. The Sperry outlet tester is perfect! Easy to use and the visual confirmation lights are fantastic. It can, also, test you GFCI outlet with push of a button. Simple. The Volt meter takes one AAA battery (this is the only negative in my opinion) and the outlet tester is good to go out of the box. Happy DIY! BE SAFE.

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-09-27*